Knife



FIG. 1 is a right side elevational view of a knife showing my new design, the left side elevational view being identical;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left end elevational view of the knife as it is depicted in FIG. 1;

FIG. 4 is a right end elevational view of the knife as it is depicted in FIG. 1; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a knife, as shown, and described. 